[ARM] Orion: activate workaround for 88f6183 SPI clock erratum

Commit 2ede90ca78500ca0ffeee19d7812d345f8ad152d adds 6183 support,
but the SPI support in there doesn't work since it depends on a
6183 SPI unit erratum fix that only just went upstream, via commit
2bec19fe.
Signed-off-by: Nicolas Pitre <nico@marvell.com>

arch/arm/mach-orion5x/common.c

@@ -311,6 +311,7 @@ void __init orion5x_sata_init(struct mv_sata_platform_data *sata_data)
  ****************************************************************************/
 static struct orion_spi_info orion5x_spi_plat_data = {
 	.tclk			= 0,
+	.enable_clock_fix	= 1,
 };
 
 static struct resource orion5x_spi_resources[] = {